2026-10-15T03:35:31Z https://www.scidb.cn/oai

10.57760/sciencedb.07107 2023-01-12T16:14:51Z

2023-01-12 Numerical Aperture Measurement Based on Ronchi Lateral Interferometry doi:10.57760/sciencedb.07107 en The experiment was conducted in the double-grating Ronchi LSI system. The light source is a monochromatic light-emitting diode (LED) with λ = 532 nm. The objective lens under test has a magnification of 5× and a NA of 0.3. The periods of the object-plane grating and the image-plane grating are 75.2 μm and 15.04 μm, respectively. The image-plane grating is moved along the axial direction (z direction) in the study, and the x-sheared and y-sheared wavefront at the corresponding positions are measured using the (3N+1)-frame algorithm, then calculated the x-tilt coefficients of Zernike terms (Z2) of x-sheared wavefront and the y-tilt coefficients of Zernike terms (Z3) of y-sheared wavefront. The original measurement data were collected on July 23, 2021. Numerical aperture measurement; projection lens; Ronchi lateral shearing interferometry; shear wavefront; optical path difference Yunjun Lu Zhongliang Li Feng Tang Xiangzhao Wang PUBLIC https://creativecommons.org/publicdomain/zero/1.0/ dataset Science Data Bank